长期大量求购硫精砂

S≥46%、AS≤0.05%、F≤0.05%、Pb+Zn≤0.5%、Zn≤0.35%、H2O≤12% S≥35%、AS≤0.05%、F≤0.05%、Pb+Zn≤0.5%、Zn≤0.35%、H2O≤12% 

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